K-REACH is South Korea’s Act on the Registration and Evaluation of Chemicals, in force since 2015 and substantially amended in 2019. It is the Korean equivalent of EU REACH, requiring registration of substances manufactured in or imported into South Korea above 1 tonne per year. K-REACH is administered by the Korean Ministry of Environment through the National Institute of Environmental Research (NIER). For Chinese-origin chemicals entering the Korean market, K-REACH compliance falls on the Korean importer or a designated Only Representative.
What K-REACH requires
Three obligations:
- Notification of all substances manufactured or imported above 1 tonne per year. New chemical substances (not on the existing inventory) require a separate New Substance Notification before any import or manufacture.
- Registration with full data dossier for substances above tonnage thresholds (tier-based, see below)
- Authorisation for substances designated as substances of concern (similar to EU SVHC) and Restricted/Prohibited Substances
The existing chemical substance inventory under K-REACH is maintained by NIER. Substances on the inventory follow the registration timeline by tier; substances not on the inventory must clear new substance notification first.
Phase-in registration tiers
K-REACH uses tonnage-based registration deadlines, similar to EU REACH:
| Tonnage band | Registration deadline |
|---|---|
| ≥ 1,000 t/yr | June 30, 2021 (already passed) |
| 100 to 1,000 t/yr | June 30, 2024 (already passed) |
| 10 to 100 t/yr | June 30, 2027 |
| 1 to 10 t/yr | June 30, 2030 |
The remaining deadlines (2027, 2030) cover medium and lower tonnage. A Korean importer bringing in a new substance from China at 50 tonnes per year must register before the 2027 deadline OR cease imports at that volume.
Joint submission
K-REACH allows joint submission for substances registered by multiple Korean importers, the Korean version of the REACH SIEF (Substance Information Exchange Forum) mechanism. Importers of the same substance share the cost of generating the data dossier. The lead registrant submits the joint dossier; followers reference it.
For Chinese-origin substances entering the Korean market through multiple importers, joint submission is the norm. The lead registrant is usually the highest-volume Korean importer, or a third-party consultancy organising the consortium.
The Only Representative mechanism
K-REACH allows a non-Korean manufacturer to designate a Korean Only Representative (OR) to handle K-REACH obligations on its behalf. The OR must be a Korean legal entity with technical capacity. Once designated, the OR registers the substance, holds the registration in its name, and aggregates the volume across all Korean importers receiving from that manufacturer.
For a Chinese chemical factory exporting to multiple Korean customers, the OR mechanism centralises K-REACH compliance. The Chinese factory pays the OR fee (typically USD 30,000 to USD 80,000 per substance per year for active OR services); the OR handles registration, dossier maintenance, and downstream-user notification. The Korean customers benefit from not having to register the substance individually, they buy from a “K-REACH registered” supplier.
For factories without OR coverage, each Korean customer registers separately, multiplying total compliance cost across the supply chain.
Substances of concern under K-REACH
K-REACH maintains a list of:
- Restricted Substances, restricted to specific uses
- Prohibited Substances, banned outright
- Substances Subject to Authorisation, require pre-use authorisation (Korean equivalent of EU REACH Annex XIV)
- Toxic Chemicals, managed under separate Chemical Control Act with stricter handling rules
The lists overlap with EU REACH SVHC and Authorisation lists for many substances. Carcinogens, mutagens, reproductive toxicants, persistent organic pollutants, and endocrine disruptors are routinely listed under both regimes.
How K-REACH differs from EU REACH
| Aspect | EU REACH | K-REACH |
|---|---|---|
| Tonnage threshold for registration | 1 t/yr | 1 t/yr |
| Phase-in deadlines | All passed (last 2018) | Two remaining (2027, 2030) |
| Joint submission required for full registration | Yes (mandatory) | Yes |
| Only Representative for non-EU/non-Korea suppliers | Yes | Yes |
| New Substance Notification before any import | No (registration covers this) | Yes (separate from registration) |
| Reach Authorisation List | Yes (Annex XIV) | Yes (similar mechanism) |
| Annual data update obligation | Yes for some tonnage bands | Yes |
Practical implications for buyers sourcing Chinese chemicals into Korea
For a buyer routing Chinese-origin chemicals into the Korean market:
- Confirm K-REACH registration status of the substance before contracting. The Chinese factory should have either an OR-mediated registration or an existing Korean importer holding the registration.
- For substances near a phase-in deadline, plan for the registration to be completed before the deadline or accept the volume cap.
- Cross-check Restricted/Prohibited lists before signing volume contracts. A Korean Restricted listing can disqualify an entire use case for the substance.
- For substances with EU SVHC or REACH Authorisation listing, expect the K-REACH framework to add similar restriction over time. Build the regulatory horizon into multi-year supply contracts.
Operator note: the China-Korea-EU triangulation
Substances produced in China that are SVHC-listed in the EU often follow the same restriction trajectory in K-REACH. The lag between EU SVHC listing and K-REACH listing is typically 2 to 4 years. A buyer noting an EU SVHC announcement on a substance currently shipped China-to-Korea has an early-warning signal to plan for likely Korean restriction within the next regulatory cycle.
Related terms
REACH. EU equivalent. TSCA. US equivalent. IECSC. Chinese equivalent. AICIS. Australian equivalent. SVHC. EU concern designation that often precedes K-REACH restriction.